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Lesson 2: repeatingElements #59

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seemcat opened this issue Oct 30, 2017 · 0 comments
Open

Lesson 2: repeatingElements #59

seemcat opened this issue Oct 30, 2017 · 0 comments

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@seemcat
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seemcat commented Oct 30, 2017

Takes in an array of numbers and returns an array of all duplicate numbers. Hint: Use an object to keep track of which numbers are repeated.

Input: [1, 2, 2, 3, 3, 3, 4, 5, 5]
Output: [2, 3, 5]
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